let hd: string = "www.baidu.com";
console.log(hd);

let value: number;
value = 89;
console.log(value);

let result: boolean = 1 > 2;
console.log(result);

// 声明字符串数组
let arr: string[] = [];
arr.push("chengzhu", "zhangyun", "zhuwei");
console.log(arr);

// 泛型的方式声明字符串数组
let arr2: Array<string> = [];
arr2.push("chengzhu", "zhangyun", "zhuwei");
console.log(arr2);
